Your relationship
A wish to protect an important direction meets a wish to correct the problem at hand. Direct opinions may teach you something, while sometimes feeling like a rejection of you personally.
As romantic partners
Keeping a requested change focused on behavior can turn it into a discussion of daily life without words that reject the person themselves.
As friends
When hearing a different opinion, first naming one point you liked can keep honest feedback from becoming a test of closeness.
As colleagues
Discussing a place to improve separately from an evaluation of the person responsible can make room for both attachment to an idea and necessary revision.
What each of you brings
Jia (甲) (A great tree): A great tree reaching straight toward the sky. A key theme is Aspiration・A sense of fairness・Leadership・Firm convictions.
Geng (庚) (Steel): Steel shining after being forged. A key theme is Decisiveness・Loyalty・Initiative・Reform.